In this way, we are able to compare the corrected GeMS images with a first-epoch of HST-Advanced Camera for Survey (ACS) images to recover the relative proper motion of the Sagittarius dwarf spheroidal galaxy with respect to NGC 6681. Proper motions from the Hubble Space Telescope (HST) for a sample of its stars are already available, allowing us to construct a distortion-free reference at the epoch of GeMS observations that is used to measure and correct the temporally changing distortions for each GeMS exposure. For the first time the astrometric capabilities of the Gemini Multi-Conjugate Adaptive Optics System (GeMS) facility at the Gemini South Adaptive Optics Imager (GSAOI) camera on Gemini-South are tested to quantify the accuracy in determining stellar proper motions in the Galactic globular cluster NGC 6681. Veran 3ġ INAF–Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyĮ-mail: University of Groningen, Kapteyn Astronomical Institute, 9747 AD Groningen, The Netherlandsģ Herzberg Astronomy and Astrophysics, National Research Council Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, CanadaĤ Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USAĥ Department of Physics and Astronomy, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, CanadaĦ Dipartimento di Fisica, Università di Roma Tor Vergata, via della Ricerca Scientifca 1, 00133 Roma, Italyħ INAF–Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monteporzio Catone, ItalyĪims. Astronomical objects: linking to databasesĭ.Including author names using non-Roman alphabets. Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes
0 Comments
Leave a Reply. |